This is the problem of
HADOOP-9482 now showing up in a different application -one whose log4j settings haven't turned off all Shell logging.
Unless you do that, all yarn clients will have a stack trace at error in their logs, which is generating false alarms and is utterly pointless. Why does this merit a stack trace? Why log it at error? It's not an error for a client app to not have these values set as long as they have the relevant JARs on their classpath. And if they don't, they'll get some classpath error instead